No problem, we've got 3109 and 396 to multiply
3109 × 396 = 396 × (3109)
+ 396 × 9 that equals 3564
+ 396 × 00 what gives us 0
+ 396 × 100 yielding 39600
+ 396 × 3000 that is equal 1188000

= 1231164
